Research Article
Cu(In,Ga)Se2 Thin Films Codoped with Sodium and Bismuth Ions for the Use in the Solar Cells
Figure 7
(a) Temperature dependence of PL spectra for Cu(In,Ga)Se2 films doped with sodium and bismuth ions, and (b) low-temperature PL spectra for Cu(In,Ga)Se2 films at 10 K.
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| (b) |